David Greig's adaptation of Roald Dahl's classic children's story features the film's best known song "Pure Imagination", plus a host of new music by Marc Shaiman and Scott Wittman.

Alex Jennings is the only performer to have won an Olivier Award in the drama, musical and comedy categories, winning Best Actor for Peer Gynt (1996), Best Actor in a Musical for My Fair Lady (2003), and Best Comedy Performance for Too Clever By Half (1988).

His other theatrical credits include Untold Stories, The Habit of Art, Stuff Happens, The Winter's Tale, The Relapse (National Theatre), Hamlet, Peer Gynt, A Midsummer Night's Dream (RSC), The Liar and Candide.